[php-src] Issue #21748: Segmentation fault (zend_mm_heap corrupted) with pipe operator

Issue: https://github.com/php/php-src/issues/21748
Author: adrianszczotkowski

### Description

Step 1:
The following code:
```
function test(string $string): void
{
    echo $string . PHP_EOL;
}

'abc' |> test(...);
```

Running with extra debug output :
```
php -e -n ./test.php
```

As expected returns:
```
abc
```

Step 2:
Add a file const.php
```
<?php

define('OPQ', false);
```
And require it in test.php:
```
require_once __DIR__ . '/const.php';
```

Run the same command:
```
php -e -n ./test.php
```
Returns:
```
zend_mm_heap corrupted
```

Step 3:
But add another define in test.php
```
require_once 'const.php';

define('XYZ', false);

function test(string $string): void
{
    echo $string . PHP_EOL;
}

'abc' |> test(...);
```
Run the same command:
```
php -e -n ./test.php
```
Works fine and returns:
```
abc
```

Bonus content:
Try the steps above without -n:
```
php -e ./test.php
```

Returns random content eg.:
```
<�V
```

### PHP Version

```plain
PHP 8.5.5 (cli) (built: Apr  9 2026 22:14:17) (ZTS)
Copyright (c) The PHP Group
Built by https://github.com/docker-library/php
Zend Engine v4.5.5, Copyright (c) Zend Technologies
    with Zend OPcache v8.5.5, Copyright (c), by Zend Technologies
```

### Operating System

Linux 88a458a84760 6.19.12-1-cachyos #1 SMP PREEMPT_DYNAMIC Sat, 11 Apr 2026 19:24:21 +0000 x86_64 GNU/Linux